The "CURVEBALL"

What age to start throwing it. How many to throw a game. Does it really hurt the arm more than a fastball? How do I throw it correctly?

All very good questions, but answers that could differ depending on the person you ask. Since it was asked to me here, I will give my answers. Throwing overhand is not a natural act, hence why we get a "sore" arm after throwing at times. By throwing a curveball you can put extra stress on the arm, especially and most definately if it is thrown incorrectly. This is the major reason I tell kids to wait to throw the curveball. That, and it is best to let the bones mature and the body as a whole mature.
The biggest problem with a curveball is that kids try and throw it by "twisting" there wrists. Like if you were opening a doorknob for example. This puts a lot of stress on the elbow, inparticular the ulnar nerve. Through all my years of coaching kids, this is how every child will throw it. Pretend you had a fishing rod in your hand, or better yet, go out to the garage and get one. Pretend like you were casting straight out in front of you. That is the wrist action you need to create with a curveball. This will give you the most effective break on the ball and the least amount of stress to the arm. Its a win win. I have created a product that is currently in manufacturing mode that will teach kids this technique within minutes. It will be available at curveballtrainer.com soon. I will have another post when it is out as it will be a huge benefit to the youth of baseball and to those of all ages playing Americas game.
Keep your questions coming folks.